Chapter 7, Problem 31P

Interpretation Introduction

Interpretation:

The syntheses of cyclopentene from the given compounds are to be outlined.

Concept introduction:

Substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a functional group is substituted by any other functional group is called a substitution reaction.

Elimination reaction: A reaction in which two substituent groups are detached and a double bond is formed is called an elimination reaction.

Nucleophilic substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a functional group is substituted by any nucleophile is called a nucleophilic substitution reaction.

A nucleophile is a molecule or atom with the negative charge or having lone pair on nucleophilic atom.

There are two types of nucleophilic substitution reactions: ${\text{S}}_{\text{N}}1$ is a unimolecular reaction and ${\text{S}}_{\text{N}}\text{2}$ is a bimolecular reaction.